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*The smallest part of matter

*Atoms cannot be divided

*Everything is made of atoms.

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*Atoms are building blocks. If you want to create a language, you'll need an alphabet.

*If you want to build molecules, you will need atoms of different elements.

*Elements are the alphabet in the language of molecules. Each element is a little bit different from the rest.

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Part Location Charge

protonInside the

nucleuspositive

neutronInside the

nucleusno charge

electron

Revolving

around

nucleus

negative

Atoms are made up of three

types of particles. Protons and

neutrons are found in the center

of the atom. This area is called

the nucleus. Electrons are

smaller particles that circle

around the nucleus.

Some particles have an

electrical charge. Protons have a

positive charge. Electrons have a

negative charge. Neutrons have

no charge.

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A molecule forms when two or more

atoms join together. For example,

three atoms combine (join) to form a

water molecule.

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Atoms in NeoK12

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